Ostracodes are small animals, most of which have a two valved shell.

介形虫是小型动物，其中大部份都具有两瓣的外壳。

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Now we have recovered invertebrate fossils, such as bivalves, conchostracans, gastropods and ostracodes, in the dinosaurian egg-bearing strata.

本次研究在西峡盆地含恐龙蛋地层中首次发现了无脊椎动物化石，如双壳类、叶肢介、腹足类和介形类。

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